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What is peak current?
We will provide detailed information about peak current in switching power supplies and AC/DC Power Adapter. We can supply Products that support your required peak current.
About Peak Current
When Using DC Motors or Pumps…
When we receive inquiries about adapters or built-in power supplies and ask customers about their intended application, we often find that they are considering use in equipment that incorporates DC motors or pumps.
Recently, such cases have been increasing.
Products that use DC motors or pumps are surprisingly common in everyday life, such as fan drive units in electric fans and air purifiers, sewing machines, and paper feed units in scanners and copiers.
When we learn that the device connected to our power supply uses a DC motor or pump, we ask our customers, "Is the peak current within acceptable limits?"
Peak current refers to the instantaneous excessive current that flows when driving a DC motor.
If this is ignored, the power supply may enter protection mode unintentionally and stop the operation of the equipment, or it may cause premature failure of components used in the power supply, ultimately resulting in the shutdown of the device.
It is advisable to take measures against peak current at an early stage, so for customers who require adjustments, we ask them to provide peak current waveform data.
For customers who find it difficult to provide waveform data, we request information on the maximum peak current value and the duration of the current.
Our power supply lineup includes open-frame switching power supplies such as the 240W UOHC3240 series and UOHL3240 series, which support double peak load capacity, as well as the AC/DC Power Adapter PA series, which can handle double peak loads for durations from 1 to 10 seconds.
Based on these standard models, we propose solutions tailored to customer requirements while taking power supply safety into consideration.
If you are considering using a power supply for equipment such as DC motors or pumps where peak current may be a concern, we would be pleased to hear from you.